In a message dated 2/18/2008 5:43:13 PM GMT Standard Time,
ad4hk2004@yahoo.com writes:
> The K3 narrow test was done with a 200 cycle, 5 pole crystal filter...
> The narrowest OII factory filter I am aware of is 300 cycles and (?) 4 poles <
> too lazy to look it up>... I suspect that this killer filter is a big part of
> those extra dB's (hint hint, TT)
>
Good point. If TT, Inrad or someone came out with a 200 Hz roofing filter
for the O II that similarly outperformed the current 300 Hz filter, I'd buy it,
since I usually run the main rx at 100-200 Hz anyway.
73 Ray W2RS
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